| (19) |
 |
|
(11) |
EP 0 354 744 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
16.05.1990 Bulletin 1990/20 |
| (43) |
Date of publication A2: |
|
14.02.1990 Bulletin 1990/07 |
| (22) |
Date of filing: 07.08.1989 |
|
| (51) |
International Patent Classification (IPC)5: B01D 21/00 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE ES FR GB IT LI NL SE |
| (30) |
Priority: |
09.08.1988 GB 8818866
|
| (71) |
Applicant: ALLIED COLLOIDS LIMITED |
|
Bradford,
West Yorkshire BD12 0JZ (GB) |
|
| (72) |
Inventor: |
|
- Moir, John
Christchurch
Dorset (GB)
|
| (74) |
Representative: Lawrence, Peter Robin Broughton et al |
|
GILL JENNINGS & EVERY,
Broadgate House,
7 Eldon Street
London EC2M 7LH
London EC2M 7LH (GB) |
|
| |
|
| (54) |
Clarification apparatus |
(57) Liquor-clarifying apparatus comprises a tank 1, inlets 2 for suspension to be clarified,
outlets 3 for clarified water, outlet 4 for sedimented solids, and a plurality of
settling assemblies each comprising a stack 6 of downwardly inclined plates 7 mounted
around a vertical collection duct 39. This duct generally comprises a downwardly extending
duct 18 that leads directly into an upwardly extending duct 27. The plates 6 are preferably
conical or pyramidal and are preferably self-spacing and capable of being clipped
together by a push fit. A downwardly extending skirt 40 may be provided. Orifices
25 allow clarified liquid to pass from between the plates into the collection duct
and preferably these orifices are elongated.